Interplay of superconductivity and Ce 4f magnetism in CeFeAs1−xPxO0.95F0.05
Yongkang Luo, Han Han, Shuai Jiang, Xiao Lin, Yuke Li, Jianhui Dai, Guanghan Cao, Zhu-an Xu
DOI 10.1103/PhysRevB.83.054501 · Physical Review B
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Abstract
We performed a systematic investigation of the physical properties of CeFeAs1−xPxO0.95F0.05 (0 ⩽x⩽ 1) by measuring electrical resistivity, magnetization, and specific heat. Superconductivity (SC) was observed in a wide range of P doping, 0⩽x<0.55, with a maximum Tc≈21.3 K at x=0.15. Both the x=0 and 0.53 samples show a reentrance behavior near the antiferromagnetic and ferromagnetic ordering temperatures of the Ce 4f spins, respectively. An antiferromagnetic-to-ferromagnetic (FM) evolution of Ce 4f electrons was observed around x=0.45 and SC competes with the ferromagnetic order of Ce 4f electrons in this region. Our results provide clear evidence for the SC-FM competition caused by the interlayer coupling in the cerium-containing iron pnictides.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeFeAs1-xPxO0.95F0.05 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21.3 | Pressure not reported | onset |
| CeFeAs1-xPxO0.95F0.05 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21.3 | Pressure not reported | onset |
| CeFeAsO0.95F0.05 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13.3 | Pressure not reported | onset |
| CeFeAsO0.95F0.05 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13.3 | Pressure not reported | onset |
| CeFeAs0.47P0.53O0.95F0.05 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.5 | Pressure not reported | onset |
| LaFeAsO1-yFy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
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